Drier.



.No.789,984=. PATBNTED MAY16Q1905.

W. R. MAGKLIND. DRIER.

APPLICATION FILED JULY 20, 1904.

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UNITED STATES,

Patented May 16, 1905.

PATENT OFFICE.

DRIER.

SPECIFICATION forming part of Letters Patent No. 789,984, dated May 16,1905.

Application filed July 20, 1904. Serial No. 217,380.

To all whom it may concern:

Be it known that I, WILLIAM R. MACKLIND, a citizen of the United States,residing at Mineralpoint, Washington county, Missouri, have invented acertain new and useful Improvement in Driers, of which the following isa full, clear, and exact description, such as will enable others skilledin the art to which it appertains to make and use the same, referencebeing had to the accompanying drawings, forming part of thisspecification, in which Figure 1 is a side elevational view, partly insection, of a drier constructed in accordance with my invention. Fig. 2is a vertical cross-secional view through the drier. Fig. 3 is asectional view through a portion of one end of the cylinder and throughthe siphon- Fig. 1 is an enlarged sectional view through the dischargeportion of the hopper, and Fig. 5 is an enlarged fragmentarycross-sectional view through the same.

This invention relates to the general class of driers, but moreparticularly to a drier for drying sludge, in which a revolving cylinderis employed having means for heating it, whereby the moisture in thesludge will be evaporated.

One of the objects of the invention is to being understood that changesin the form,

proportion, and minor details of construction ards 2 and 3 at the endsthereof. Mounted in bearings in the standards are the trunnions of therotatable cylinder 4, which cylinder is provided with a water-trap 5,which is adapted to receive the water of condensation when steam is usedfor heating the cylinder. The trunnions which support the cylinder areprovided with longitudinal perforations. One of the trunnions receivesan inlet-pipe 6, whereby steam may be introduced into the cylinder.. Theopposite trunnion is provided with a siphon and an exit-pipe to permitthe steam to pass therethrough. The siphon is illustrated ascomprising'a pipe 7, having on one end thereof a T-joint 8 with adepending tubular siphon-arm 9, one end of which is the receiving end ofthe siphon. The long arm of the siphon is designated by thereference-numeral l0, and it is connected to the pipe 7 by a T-coupling11, at one end of which is a stuffing-boX 12, through which theexit-pipe 13 projects, said pipe being in communication with theinterior of the cylinder to permit the escape of the utilized steam.

14 designates a gland which is adjustable in the tubular flange portion15 of the nut 16, which closes the T-coupling 11.

17 designates an ordinary stuffing-box for the respective trunnions.

Surrounding the cylinder is a casing 18, which is in the form of ahopper, the lower portion of the hopper-like casing being adjacent to anopening in the base, so that the material may be discharged upon asuitable receptacle. At one of the longitudinal edges of the hopper is arigid knife or scraper, (designated by the numeral 19,) which is securedto the edge of the hopper by the bolts 20. By reference to Fig. 2 itwill be observed that the inner edge of the scraper 19 is adjacent tothe cylinder 1, so that during the revolution of the cylinder the driedsludge may be scraped therefrom and pass off through the hopper 18.

Suspended in the standards 2 and 3 is a hopper 21, which hopper isprovided with a water-jacket 21 The bottom or outlet portion of thehopper is constricted, as at 22, the constricted portion being providedwith a plurality of perforations 23. In order that the quantity ofmaterial fed from the hopper may be regulated, I have provided valveswhich are indicated as consisting of slide-plates 24, havingperforations adapted to coincide with the perforations in the hopper 21.These valves slide in slots 25 in the hopper and are movable topositions whereby the quantity of discharged material can not only begoverned but the outlet-orifices may be entirely closed. The mechanismfor effecting this is illustrated as comprising levers 26, suspendedfrom an arm 27 on the hopper, said levers being connected to the valvesby links 28. Each link is guided in a looped bracket 29, and the outwardmovement of the link is limited by a projection 30 in rear of the loopof thebracket 29. A pivot 31 connects each link 28 to its lever 26, or arod of approximately the same length as the length of the hopper may beused to connect auxiliary links to the fulcrum 34 of the lever 26, sothat a uniform power will be exerted upon a slide acting as a valvedelement for all of the openings.

A novel means is provided for feeding the sludge from the hopper to thecylinder. This feeding means is illustrated as comprising a vibratorytable 35, which is suspended beneath the hopper in slings 36. The rearof the slings, with which the vibratory table is rigid, are connected tothe hopper by links 37 which are pivoted at their upper ends and whichare provided at their lower ends with a series of perforations wherebythe angle of inclination of the table may be adjusted by inserting thefastening-pins 38 in the proper openings in the links. The forward endsof the slings terminate in right-angularly-disposed fingers 39, whichrest upon the eccen trio-shaft 40, carried by the standards 2 and 3, sothat the revolution of the shaft will impart a vibratory motion to thetable. In order that the hangers will remain at all times upon theeccentric -shaft, I have provided springs 41, one end of each springbeing secured to the hopper and the other end bearing upon the table.

A novel means is provided for forcing the material from the hopper 21onto the table. In the present instance this is accomplished by alongitudinally-disposed vertically-reciprocating bar 42, which has acontinuous movement during the operation of the machine, so as to evenlyforce the sludge through the opening or openings in the hopper. The bar42 is attached to a second bar 43 by means of the connecting-rods 44 and45, which work in guide-lugs in the hopper.

Fulcrumed to a standard 46 on the edge of the hopper 21 is a lever 47,which is suitably connected to the bar 43. This lever is rocked by meansof a pitman 48, which is connected to the eccentric 49 on the shaft 50.The shaft 50 is capable of having motion imparted thereto by means ofthe supported pinion 51, which meshes with the large gear 52, carried bythe cylindrical drum. The gear 52 is in turn driven by a pinion 53 onthe shaft 54, on which is a drive-pulley 55.

All of the parts being assembled, the operation is as follows: The steamor some suitable heating medium is admitted into the cylinder andthrough the pipe 6, which cylinder is started in operation by means of asuitable power device cooperating with the pulley on the shaft 54.Rotation of the cylinder will cause the shaft 50 to rotate and start thehopper-feeding device in operation. The eccentric-shaft 40 is driven ata comparatively high rate of speed and usually by different motive powerfrom that which drives the drum. The rapid rotation of the shaft willcause a rapid vibratory motion of the table, so that as the sludge isfed thereon it will be caused to evenly pass onto the drum. As the d rumcompletes its revolution the sludge will have sufiiciently dried, and itwill be removed by the rigid knife 19, which knife is so spaced awayfrom the drum as to prevent contact of the dried sludge therewith andconsequent discoloration. After the sludge is removed and passed throughthe bottom of the hopper it can be removed by a suitable receptacle,which has previously been placed under the discharge end of the hopper.

Under certain conditions I have found it advisable to provide means forremoving any adhering particles from the drum after it has passed theknife 19. In order to provide for this, I attach a rotary brush 56 onthe shaft 57, which shaft rests in suitable bearings in an inclosingcasing 58. The brush is preferably a wire one, and any particles ofmaterial which will have adhered to the surface of the drum after it haspassed the knife 19 will be efficiently removed and discharged from thecasing through the discharge-opening 59. The shaft on which ispositioned the brush receives its rotation by means of a sprocketchain60, which passes around suitable sprockets on the eccentric-shaft 40 andthe shaft 57. The shaft 57 will be so geared to the eccentricshaft thatthe brush will be caused to rotate in a direction opposite to thedirection of movement of the drum and it will rotate at approximatelythe same speed as the speed of the eccentric-shaft, or, in other words,at a relatively higher speed than the speed of the drum.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a drier, the combination with a heated rotating cylinder, avibrating table for feeding sludge on said cylinder, a hopper forsupplying sludge to the vibrating table, and a reciprocatory agitator inthe hopper for feeding the sludge continuously and uniformly to thevibrating table; substantially as deseri bed.

2. In a drier, the combination with a heated rotary cylinder, of avibratory table above said cylinder, and means for feeding sludge on thetable; substantially as described.

8. In adrier, the combination with a rotary, heated cylinder, means forrotating said cylinder, a vibratory table above the cylinder, means forfeeding material on the table, and a shaft for vibrating the table, saidshaft travelingat a relatively high rate of speed with relation to thespeed of travel of the'cylinder; substantially as described.

4. In a drier, the combination with a heated rotary cylinder, a hopperabove the cylinder, an agitator therein, and a spring-pressed vibratorytable interposed between the hopper and the cylinder; substantially asdescribed.

5. In a drier, the combination with a heated rotary cylinder, a hopperabove the cylinder, a vibratory table between the cylinder and hopper,and means for varying the angle of inclination of the table;substantially as described.

6. In a drier, the combination with a heated rotary cylinder, a hopperabove the cylinder, an angularly-adjustable vibratory table interposedbetween the cylinder and hopper, and springs carried by the hopper andresting ad-' jacent to the ends of the table; substantially asdescribed.

7 In a drier, the combination with a rotary cylinder having a fluid-exitfor the cylinder, comprising a pipe, a siphon, one portion of whichsurrounds said pipe, a T-coupling forming a part of the siphon andsurrounding the pipe, a nut cooperating with the T-joint, a glandsurrounding the pipe and adjacent to the nut, a packing between thegland and the

